[BUGFIX] Clamp "simulateDate" timestamp to minimum 60 seconds

In order to avoid RuntimeExceptions, the "simulateDate" TSConfig setting
for the  adminpanel has to be at least 60 seconds. Otherwise
$GLOBALS['SIM_ACCESS_TIME'] will be set to 0.

Resolves: #88437
Releases: master, 9.5
Change-Id: I0377eb4e1d96636367529d185181f61affed44fc
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/60821


Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Tested-by: Frank Naegler <frank.naegler@typo3.org>
Reviewed-by: Benni Mack <benni@typo3.org>
Reviewed-by: Oliver Klee <typo3-coding@oliverklee.de>
Reviewed-by: Andreas Fernandez <a.fernandez@scripting-base.de>
Reviewed-by: Frank Naegler <frank.naegler@typo3.org>

typo3/sysext/adminpanel/Classes/Modules/PreviewModule.php

@@ -240,6 +240,7 @@ class PreviewModule extends AbstractModule implements InitializableInterface, Pa
         }
         if ($date !== false) {
             $simTime = $date->getTimestamp();
+            $simTime = max($simTime, 60);
         }
         return $simTime ?? null;
     }

typo3/sysext/adminpanel/Tests/Unit/Modules/PreviewModuleTest.php

@@ -28,7 +28,11 @@ class PreviewModuleTest extends UnitTestCase
                 (int)(new \DateTime('2018-01-01 12:00:15 UTC'))->getTimestamp(),
                 (int)(new \DateTime('2018-01-01 12:00:00 UTC'))->getTimestamp(),
             ],
-
+            'timestamp_1970' => [
+                (string)(new \DateTime('1970-01-01 00:00:15 UTC'))->getTimestamp(),
+                (int)(new \DateTime('1970-01-01 00:00:60 UTC'))->getTimestamp(),
+                (int)(new \DateTime('1970-01-01 00:00:60 UTC'))->getTimestamp(),
+            ],
         ];
     }